209560223 has 2 divisors, whose sum is σ = 209560224. Its totient is φ = 209560222.

The previous prime is 209560213. The next prime is 209560283. The reversal of 209560223 is 322065902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 209560223 - 2⁶ = 209560159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209560213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104780111 + 104780112.

It is an arithmetic number, because the mean of its divisors is an integer number (104780112).

Almost surely, 2^209560223 is an apocalyptic number.

209560223 is a deficient number, since it is larger than the sum of its proper divisors (1).

209560223 is an equidigital number, since it uses as much as digits as its factorization.

209560223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 209560223 is about 14476.1950456603. The cubic root of 209560223 is about 593.9769846388.

The spelling of 209560223 in words is "two hundred nine million, five hundred sixty thousand, two hundred twenty-three".